1. CHECKING of the built-in UCU-01 control unit.
Switch on the amplifier and check as follows:
- check the heating time: it must be around 180sec. After 180 sec the RDY yellow
LED will sign if the PA is ready to work.
- check the 18V AC voltage btn 4-5 pins of JP4 connector. (here must
be18-19V)
- check the following voltages:
- Please push the TMP knob on the front page of the linear and set the P5
"SPEED" poti - up to actual room temperature (20 degr. two green
leds
will lit)
- Set the STBY/OPR switch on the frontpage to OPR position.
- Check now the voltage on the pin 1. of JP1 connector This is the cathode
voltage of the tube, must be >than +40V if the tube receives the anode
voltage.
- Put shortcut to PTT input of the amplifier: (red RCA jack on the rear panel)
- The sequencer unit (only in the new version PA's from 1st Jan. 2009)
will give out shortcuts for the RCA jacks:
- Set now the correct idle current of the tube as follows:
Set finally the P4 poti
to close to full right position. (you can set with P4 te sensitivity of OVR
operation)
2. Modification on
UCU-01 panel.
D17 supressor
diode
(600W bipolar type BZW06-10B) It will save the input of the Ip meter unit on
case of inner HV arc in the tube.
After any inner arc if no Ip
measurment check or change this diode.
D18 supress diode (600W bipolar type built in parallel
with the R1 47K resistor. It will save the Q1,Q7,Q8 transistors on case HV inner
arc in
the tube.
Some 80x80mm DC FAN produce undesirable wideband noise in the
RX. Help fix the problem 100nF capacitor parallel with R21 10
Ohm
resistor ( near of JP7 connector)
3.FUNCTION and voltges of PCB connectors.
JP1. STBY/OPR SWITCH connector
PIN | FUNKTION | VOLTAGE | WIRE COLOR |
1 | CAThode | >40V/RX,~20V/TX | Black |
2 | GND | 0 V | Brown |
3 | OPR | +15/24V on OPR | Red |
4 | OPR | +15/24V on OPR | Orange |
5 | STBY | 0 V on STBY | Yellow |
JP2. LED funktion line
PIN | FUNKTION | VOLTAGE | WIRE COLOR |
1 | OVR | +8.2V on OVR | Black |
2 | RDY | +1.5 RDY on | Brown |
3 | WAIT | +8.2V WAIT on | Red |
4 | QRO | +1.5 QRO on | Orange |
5 | AIR | +1.5 AIR on | Yellow |
JP3. RLY/PTT out Connector
PIN | FUNKTION | VOLTAGE | WIRE COLOR |
1 | GND | 0 V | BLACK |
2 | GND | 0 V | BROWN |
3 | RLY + | +15 or +24V | RED |
4 | RLY - | max 0.7V on TX | ORANGE |
5 | RLY - | max 0.7V on TX | YELLOW |
6 | PTT | +15/24V/rx,0V/tx | GREEN |
7 | +12V OUT | +12V | BLUE |
8 | +15V IN | +15V | CYAN |
JP4. ACC Connector
PIN | FUNKTION | VOLTAGE | WIRE COLOR |
1 | FAULT/SWR | 0 on RX, +3V fault | different |
2 | +15V out | +15V | RED |
3 | +24V | +24V | RED/ORANGE |
4 | ~19V | ~19V AC | GREY |
5 | ~19V | ~19V AC | GREY |
6 | GND | GND 0V | BLACK |
7 | FAN - | 7.8V on 20Celsius | BLACK |
8 | +15V | +15V OUT | CYAN |
9 | THERM | DIFF | White/red |
JP5. IG1 meter output connector
PIN | FUNKTION | VOLTAGE | WIRE COLOR |
1 | NC. | - | - |
2 | IG1 meter out | different | BROWN |
3 | NC. | NC. | RED |
4 | NC. | NC. | - |
5 | NC. |
JP6. -B CONNECTOR
PIN | FUNKTION | VOLTAGE | WIRE COLOR |
1 | HV minus/IP mtr. | 0- -10V max | different |
2 | GND | GND 0 V | BLUE |
JP7. TMP meter output.
PIN | FUNKTION | VOLTAGE | WIRE COLOR |
1 | TMP out | 0-1.8V | YELLOW |
2 | GND | 0 V | - |
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